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[Weaver]

I was wondering whether PhyR or G.998.4 reduces your reported ES figures; whether or not ES is calculated off the presence of CRC errors regardless of the fact that L2ReTx has fixed those problem anyway, by retransmission.

What does DLM see when someone has L2ReTx ? Does it see a better performing system and credit you with that in its thinking, or not ?

[ejs]

There should be vastly fewer ES and CRCs with retransmission, because the retransmission fixes most of the errors.

[kitz]

I suspect it uses leftrs.     I had an unusual problem a few weeks ago whereby my daily few second shine spike did 'its thing' and decided to continue triggering errors.
because i was already on re-tx high and banded, it didn't cause any err secs and remarkably few crcs (hence no dslstats alarm).    However leftrs count went mental .... and that next morning the dlm banded my line at 60mbps.    this was now below my handback threshold.    I'm not in a position nor up to messing with anything right now..   so my line will have to just stay like this.    as long as i  have internet and can stream the rest isn't important.

conclusion - g.inp dlm is pretty useless for lines which experience single bouts of shine.   

[Weaver]

@ejs so the ES and CRC stats accounting mechanisms take the result of L2ReTX into account, reduced by the beneficiary effect of retransmissions?

@kitz I can’t remember what leftrs is?

[burakkucat]

@kitz I can’t remember what leftrs is?

I did know but . . . [b*cat plods off to search]

LEFTRS come from second-long periods when retransmission was being used *so much* that ordinary throughput was reduced.

[ejs]

@ejs so the ES and CRC stats accounting mechanisms take the result of L2ReTX into account, reduced by the beneficiary effect of retransmissions?

Yes.

[tiffy]

There's a little bit of information on G.Inp parameters here:
http://www.kitz.co.uk/adsl/linestats_errors.htm#retx_params

The only reason I remembered this is because I asked the same question after G.Inp was enabled on my line.

Cross post acknowledged: